The first thing that should be acknowledged about South Carolina Governor Mark Sanford's admission to an extramarital affair is that it could happen to any of us. That is not an excuse (and no, it has not happened to me, or to my wife). Every married person has heard the voice; the one that says you deserve something "better."
Gov. Sanford should have been familiar with the voice because of the Bible studies he attended. The voice began seducing humanity a long time ago. It told our first parents that they needed more than the perfection of Eden. The voice told them that G-d knew that if they ate of the tree of knowledge of good and evil they would be like G-d. But they already were like G-d, because they were made in His image.
Stick with me you secularists and non-literalists, because there is a point to be made for you, too.
Psychiatrists explain that married people tire of one another after 10 or 20 years (it used to be seven years, as in that Marilyn Monroe/Tom Ewell film "The Seven Year Itch." Must be inflation.). Good marriages are the result of hard work. Forsaking all others is more than a wedding promise. It is a daily denial of one's lower instincts. Temptation is everywhere. The key to overcoming it is to realize you are fighting an adversarial force that wants to destroy you, embarrass you and cause ridicule to be heaped on the G-d you claim to worship.
Read the rest @ Cal Thomas